[turbofan] Clear pending exception from unsuccessful compilation.

src/compiler.cc

Index: src/compiler.cc
diff --git a/src/compiler.cc b/src/compiler.cc
index 26daec77a353e6943b97d7c069405bd72298eb5b..328b2780fc352853c97986686ab024524b4d29ea 100644
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -867,6 +867,9 @@ MaybeHandle<Code> Compiler::GetLazyCode(Handle<JSFunction> function) {
       DCHECK(function->shared()->is_compiled());
       return info.code();
     }
+    // We have failed compilation. If there was an exception clear it so that
+    // we can compile unoptimized code.
+    if (isolate->has_pending_exception()) isolate->clear_pending_exception();
   }
 
   if (function->shared()->is_compiled()) {